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The audiogram on the left panel represents the averaged hearing threshold levels of children participating in the randomised trial of prescription. The right panels show real-ear-aided gain (REAG) prescribed by NAL-NL1 (open squares), NAL-NL2 (filled squares), DSL v.4 (crosses), and DSL v.5 (asterisks) at low (50 dB SPL), medium (65 dB SPL), and high (80 dB SPL) input levels.
